If you dont mind, would u tell me roughly how much is the difference? Im SA from PwC and I have friends from all acc. firms. Im not sure how different is the associate level between the big 4 now, but what I can tell you is PwC's nurturing style and method is probably the best out of all firms.

Salary wise in SA level should be the more or less the same, (EY and Deloitte should have the edge), of coz if we are talking about same grade. Diff grade have diff salary. Grade depends on your interview, education, prof. qualification, etc.

Yes, PwC has all the benefit you mentioned and last time i check with my friends, PwC flex is better than the rest. Also, yes, PwC is the most prestigious in MY (they are the only one who is not involved in 1mdb scandal) but international wise, it is Deloitte.

You should consult few more people, not just lowyat forum, but your uni/college senior before you make your decision.

One last thing you might want to take note, how you fare in the firm really depends on your luck (unless you have connection with the partners). If you end up with shitty manager or senior, then you are pretty much f-up.

All the best, and good luck.